Alexandrefernandes there are a few ways you could approach this.
If you have a combined face and body mesh, where the face vertices all appear before the body vertices, you can just add the face as a live blendShape target.
If that is not the case, depending on your situation, you could use the Maya wrap deformer, the transfer attribute tool, the transfer vertex order tool, blendShapes and any combination of the above to get it to work.
An internet search should turn up some examples you could follow.
I hope this helps!
-jj
